Extensible Markup Modules - (an XML-based) replacement of both HTML and LaTeX, with a Turing-complete syntax.
This is an unofficial proposal.
See ReSpec's user guide for how to get started!
See the wiki.
make an "extension" of XHTML that is:
As first examples, I made namespaces for Table of Contents and for syntax coloring sources.
The software for this kind of XML processing already exists.
It should be standardized, because the aforementioned software is slow and we need alternative software, too.